On Tue, Aug 9, 2022 at 5:49 AM Mark Michelson <[email protected]> wrote:
>
> Thanks for the clarification Ales.
>
> Acked-by: Mark Michelson <[email protected]>

Thanks.  I applied this patch to the main branch.

Numan

>
> On 7/26/22 01:23, Ales Musil wrote:
> > I forgot to add the v2 comment, so for clarification just the commit title
> > has changed between the versions.
> >
> > Thanks,
> > Ales
> >
> > On Mon, Jul 25, 2022 at 5:19 PM Ales Musil <[email protected]> wrote:
> >
> >> The ip6_hdr is aligned to 4 bytes, but the pointer
> >> from dp_packet_l3 is aligned to 2 bytes. Use
> >> ovs_16aligned_ip6_hdr instead to get 2 bytes alignment.
> >>
> >> Signed-off-by: Ales Musil <[email protected]>
> >> ---
> >>   controller/pinctrl.c | 12 +++++++-----
> >>   1 file changed, 7 insertions(+), 5 deletions(-)
> >>
> >> diff --git a/controller/pinctrl.c b/controller/pinctrl.c
> >> index 38e8590af..21c78bed4 100644
> >> --- a/controller/pinctrl.c
> >> +++ b/controller/pinctrl.c
> >> @@ -887,7 +887,9 @@ pinctrl_parse_dhcpv6_reply(struct dp_packet *pkt_in,
> >>       OVS_REQUIRES(pinctrl_mutex)
> >>   {
> >>       struct eth_header *eth = dp_packet_eth(pkt_in);
> >> -    struct ip6_hdr *in_ip = dp_packet_l3(pkt_in);
> >> +    struct ovs_16aligned_ip6_hdr *in_ip = dp_packet_l3(pkt_in);
> >> +    struct in6_addr ip6_src;
> >> +    memcpy(&ip6_src, &in_ip->ip6_src, sizeof ip6_src);
> >>       struct udp_header *udp_in = dp_packet_l4(pkt_in);
> >>       unsigned char *in_dhcpv6_data = (unsigned char *)(udp_in + 1);
> >>       size_t dlen = MIN(ntohs(udp_in->udp_len), dp_packet_l4_size(pkt_in));
> >> @@ -971,7 +973,7 @@ pinctrl_parse_dhcpv6_reply(struct dp_packet *pkt_in,
> >>                           " aid %d", ip6_s, prefix, prefix_len, aid);
> >>           }
> >>           pinctrl_prefixd_state_handler(ip_flow, ipv6, aid, eth->eth_src,
> >> -                                      in_ip->ip6_src, prefix_len, t1, t2,
> >> +                                      ip6_src, prefix_len, t1, t2,
> >>                                         plife_time, vlife_time, uuid,
> >> uuid_len);
> >>       } else if (uuid) {
> >>           free(uuid);
> >> @@ -3736,7 +3738,7 @@ packet_put_ra_rdnss_opt(struct dp_packet *b, uint8_t
> >> num,
> >>                           ovs_be32 lifetime, const struct in6_addr *dns)
> >>   {
> >>       size_t prev_l4_size = dp_packet_l4_size(b);
> >> -    struct ip6_hdr *nh = dp_packet_l3(b);
> >> +    struct ovs_16aligned_ip6_hdr *nh = dp_packet_l3(b);
> >>       size_t len = 2 * num + 1;
> >>
> >>       nh->ip6_plen = htons(prev_l4_size + len * 8);
> >> @@ -3771,7 +3773,7 @@ packet_put_ra_dnssl_opt(struct dp_packet *b,
> >> ovs_be32 lifetime,
> >>           return;
> >>       }
> >>
> >> -    struct ip6_hdr *nh = dp_packet_l3(b);
> >> +    struct ovs_16aligned_ip6_hdr *nh = dp_packet_l3(b);
> >>       nh->ip6_plen = htons(prev_l4_size + size);
> >>
> >>       struct ovs_nd_dnssl *nd_dnssl = dp_packet_put_uninit(b, sizeof
> >> *nd_dnssl);
> >> @@ -3850,7 +3852,7 @@ packet_put_ra_route_info_opt(struct dp_packet *b,
> >> ovs_be32 lifetime,
> >>           }
> >>       }
> >>
> >> -    struct ip6_hdr *nh = dp_packet_l3(b);
> >> +    struct ovs_16aligned_ip6_hdr *nh = dp_packet_l3(b);
> >>       nh->ip6_plen = htons(prev_l4_size + size);
> >>       struct ovs_ra_msg *ra = dp_packet_l4(b);
> >>       ra->icmph.icmp6_cksum = 0;
> >> --
> >> 2.35.3
> >>
> >>
> >
>
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